Study on Dynamic Characteristics of Diorite Under Dry-Wet Cycle

doi:10.1007/s00603-021-02593-x

	Study on Dynamic Characteristics of Diorite Under Dry-Wet Cycle
	Xu, Jiangbo 3; Sun, Haohui 3; Cui, Yilun 3,4; Fei, Dongyang 3; Lan, Hengxing 1; Yan, Changgen 3; Bao, Han 3; Wu, Faquan 2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2021-08-11
页码	11
关键词	Dry-wet cycle Hopkinson pressure bar test Dynamic uniaxial compressive strength Dynamic elastic modulus Stress growth rate Energy analysis
ISSN号	0723-2632
DOI	10.1007/s00603-021-02593-x
通讯作者	Xu, Jiangbo(xujiangbo@yeah.net)
英文摘要	During the construction of tunnels in the central and western regions of China, diorite is frequently affected by vibration, blasting and water which will lead to the questions of the quality and operational safety of project. However, there are few studies on the dynamic characteristics of diorite under the action of dry-wet cycles. Therefore, this paper selected the gray-green altered diorite from Ning shan County, Shaanxi Province, China, mainly composed of plagioclase, and used the Slit Hopkinson pressure bar (SHPB) to study the effect of dry-wet cycle on the dynamic characteristics of Diorite. The test results show that the strength decay rate of the peak strength of diorite is the maximum under 1-3 dry-wet cycles, then decreases gradually. The dynamic elastic modulus of diorite dropped by 35.02% after three dry-wet cycles, accounting for 98.45% of the total attenuation. Compared the test result of three dry-wet cycles, the decrease volumes of the stress growth rate of diorite are the largest after six dry-wet cycles. Because of the actions of the dry-wet cycles, the growth rate of the rapid growth stage of the reflected energy-time history curve reduces and the growth rate of the rapid growth stage of the transmitted energy-time history curve improves. Under the action of the dry-wet cycles, the dissipation energy ratio gradually decreases, and the decrease of energy consumption density follows a negative exponential function relationship. Under the action of multiple dry-wet cycles, the tension and compression stress frequently change between the particles of rock, resulting in a significant increase of micro-cracks and an obvious degradation effect on the dynamical properties of diorite.
资助项目	National Natural Science Foundation of China[41807245] ; national Key R&D Program of China[2016YFC0802203-8] ; natural Science Foundation of Shaanxi Province[2019JQ-218] ; Key R&D Program of Shaanxi Province[2018ZDXM-SF-024] ; Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geologic Hazards[PCMGH-2017-Z-01]
WOS关键词	MECHANICAL-PROPERTIES ; COMPRESSIVE STRENGTH ; FRACTURE-TOUGHNESS ; STRAIN-RATE ; SANDSTONE ; TESTS
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000684068400001
资助机构	National Natural Science Foundation of China ; national Key R&D Program of China ; natural Science Foundation of Shaanxi Province ; Key R&D Program of Shaanxi Province ; Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geologic Hazards
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164633]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Jiangbo
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Shaoxing Univ, Shaoxing 312000, Zhejiang, Peoples R China 3.Changan Univ, Highway Coll Xian, Xian 710064, Shaanxi, Peoples R China 4.Gansu Prov Water Conservancy & Hydropower Survey, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xu, Jiangbo,Sun, Haohui,Cui, Yilun,et al. Study on Dynamic Characteristics of Diorite Under Dry-Wet Cycle[J]. ROCK MECHANICS AND ROCK ENGINEERING,2021:11.
APA	Xu, Jiangbo.,Sun, Haohui.,Cui, Yilun.,Fei, Dongyang.,Lan, Hengxing.,...&Wu, Faquan.(2021).Study on Dynamic Characteristics of Diorite Under Dry-Wet Cycle.ROCK MECHANICS AND ROCK ENGINEERING,11.
MLA	Xu, Jiangbo,et al."Study on Dynamic Characteristics of Diorite Under Dry-Wet Cycle".ROCK MECHANICS AND ROCK ENGINEERING (2021):11.